Jaden Smith heads out of the Les Ambassadeurs Casino after a birthday party in London, England on Friday night (July 29).

The 18-year-old actor’s dad, Will, told a funny story during his appearance on The Tonight Show with Jimmy Fallon about his trickster ways.

“We went to a restaurant, and Jaden was just particularly excited,” Will shared. “We sit down at the restaurant, and he looks at the waiter and he says, ‘I’ll have a tequila’ … He says, ‘The drinking age is 18 in England, Dad.’ I was like, ‘You joker!’”

He added, “I said, ‘Oh, but hold on, hold on, hold on. It’s only noon in L.A., and you weren’t born ’til 4, so you’re not 18 yet.’”

Will Smith’s Son Jaden Tricked Him into Going to London for His 18th Birthday